Machine for grinding rollers.



0. A. SCHMIDT. MACHINE FOR GRINDING ROLLERS.

APPLICATION FILED TEE. 16,1912.

Patented Mar. 11, 1913.

3 SHEETHHBBT 1.

Witnesses.

o. A. SCHMIDT.

MACHINE FOR GRINDING ROLLERS.

APPLICATION FILED FEB. 16, 1912.

Patented Mar. 11, 1913.

3 SHEETS-SHEET 3.

Witnesses. WW

UNITED s ra'ras PATENT GFFIQE.

OTTO ALWIN SCHMIDT, OF CHELMSFOBD, ENGLAND, ASSIGNOB TO T l-1E HOFFMAN}! MANUFACTURING COMPANY LIMITED. 01? LONDON, ENGLAND.

MACHINE FOR GBIIYIQINQ ROLLERS.

Specification of Letters Patent.

Patented Mar. 11, 1913.

To all whom it may concern:

. Be it known that I, Or'ro Anwix sonnunn a subject of the German Emperor, residing at Chelmsford, in the county of Essex, England, have invented a certain new and useful Improvement in :Machines for Grinding Rollers, of which the following is a specification. l

This invention consists of .a machine or device for grinding or facing atright angles to their length one or both ends of rollers such as those employed in roller bearings by the action of a moving grinding member or members 11 on one or both ends of such rollers while t ey are moving through a guide or holder.

According to some forms of the invention the machine may compnise one or more movable grinding members arranged either vertically or horizontally to act on one or simu1 taneously on both ends of the rollers and a holder or holders, guide or guides, adapted to freely hold and present the ends'of the rollers to the face or faces of a grinding member or members in a path which prefer ably differs in direction to the directed movement of the grinding member or members and in which holder, or holders, guide, or guides, the rollers preferably have more or less of a traveling rolling motion and fur thcr in which if desireda hopper or hoppers or mixing device or devices may be arranged so that the rollers are mixed at some point of their travel, or in which means may he provided for passing the rollers out of contact. with the grinding member or members and into contact with sameagain along a different path.

A machine constructed to illustrate by way of example some of the features. of the invention is shown in the accompanying drawing; in which:

Figure 1 is a part longitudinal elevation,

a portion being in section on line :1 y, Fig. 3: Fig. 2 IS a plan: and Fig. 3 is a cross section on line :0 a: of Fig. l.

The machine illustrated comprises two op-' positely facing. rotatable disks 1. carried b a fixed horizontal shaft 3 which disks are driven in the same direction from gear wheels 4. 5, by the pini'ons (3, 7, on a driven shaft 8. The right hand support for the shafts is not shown nor is a screw adjustment for the disk 2 which enables it to be moved to and from the disk l when the faces of the disks require attention or for other purposes. The two disks may be of abrasive material or of other material which is capable with the addition of suitable abrasive material of effecting the grinding and one of the disks such as 1 has a spring such as 9 so that when the disk 2 is screwed up, a spring pressure on the rollers between the two disks is obtained the means of adjustment and of obtaining pressure being similar to those employed in ball grinding machines having vertical grinding disks of a somewhat similar type.

Between the'two disks is interposed a holder or guide arranged eccentrically to the axis of the grinding member and which holder comprises two concentric arts or rings 10, 11, one being fixed and t e other floating. Between these the rollers 12 to be faced can have more or less of a rolling movement of progression and beyond the edges of which the ends of such rollers can project sufiiciently. to touch the grinding disks. To assist in strengthening the part. or ring 10 and to afford means for securing it. a web'lO" is provided which has a thick ened portion 10 for attachment to a bracket- 13 capable of being slid in grooves 14 on the base plate 15 when the part or ring 1.0 is to be moved to allow for the wear of the grinding disks or for other purposes such as for facing the grinding disks. The ring 11 is rotatable onan eccentric disk 16 made a sliding fit on the shaft 3 and prevented from rotating thereon 'by the key 3 in a suitable collar or hub 17, the rotation of the disk 11 being assisted by balls 18 located between two curved tracks on the outside and inside faces of the parts 16 and 11, respectively.

The holder part or ring 10 has a gap therein and its two ends thus formed are extended outside of the effective grinding range of the disks,1, 2, as shown at 10* to facilitate the entrance of the rollers between the disks and also the discharge of same therefrom.

On the upper or discharging side, the

rollers pass under the part 10 onto a track 19 held between two side plates 20, 20, and from track 19 they fall upon a lower track 21 also held between the plates 20; 20, from which they run down to the entering point bet ween the disks. The Walls 20, 20, and tracks 19, 21, thus provide a hopper or mixing device of the same width as the rollers so that while they can mix in progressive order they cannot twist or get askew. Such hopper affords'a means of charging and discharging the rollers, exposing them for gaging purposes or inspection, and obtaining by the mixing, uniformity.

In operation it will be seen that the end faces of the rollers traveling eccentrically to the grinding disks will be acted upon by such disks reason of the rollers projecting on each side from the holder 10, 11; and that they may have any desired number of passes through the machine, their travel which is in the nature of a rolling or partly rolling motion being obtained by the eccentric position of the disks with relation to the holder and by the assistance of the loosely rotating pa rt of such holder.

The machine may be combined with one for grinding the peripheries of the rollers and through which they travel with a similar rolling motion. Modifications may be made insamc, for example, the disks need not be co-axial shown, and in such case the holder need-not be eccentric or one disk or grinding member only toact on one end face only may be employed, or other changes in form ,may be made, the machine illustrated being an embodiment of a means for grinding the end faces of rollers while having a. traveling rolling or partial traveling rolling mot-ion.

l. A machine for facing at right angles to which an endof each of said rollers is preseutcd by the holder.

A machine for facing at rightangles to their length the ends of a series of rollers, comprising, in combination, a framework,

a holder provided with a channel in which the rollers are accurately but freely held and capable of a traveling rolling motion and grinding members to which each end of such rollers is presented during their travel.

3. A machine for facing at right angles to their length an end of each of a series of rollers, comprising, in combination, a framework, a holder provided "with a channel in which the rollers are accurately but freely held and capable of a traveling rolling motion, and movable grinding disks to which each end ofsuch rollers are presented during their travel, suclrchannel being located ecc'entrically with respect to the grinding disk so as to cause the latter to effectthe traveling rolling movement of the rollers.

4. A machine for facing at right angles to their length an end of each of a series of rollers, comprising, in combination, a framework, an in part circular holder in which the rollers are accurately but freely held and capable of moving with a traveling rolling motion, and a movable grinding disk to which the ends of such rollers are presented by the holder during their travel, such disk being located eccentrically to the holder and said holder having a gap therein with entering and discharging points for the rollers the location of the disk with respect to the holder acting to take the rollers into the holder from the entering point and dis-.

charge them at the discharging point.

5. A machine for facing at right angles to their length an end of each of a series of rollers, comprising, in combination, a framework, a holder in which the rollers are accurately but freely held and capable of rolling, a movable grinding member to which the ends of such rollers are presented by the holder, and a mixing device for the rollers, interposed in the pathof travel of-same'.

' 6. In a machine for facing at right angles i to their length an end of each of a series of .rollers, a holder for the rollers comprising two concentric rings one of which is fixed and the other floating, and from the side of which the ends of the rollers project and a movable grinding disk having a flat face adapted to act on the ends of such rollersf 7; In a machine for facing at right angles to their length an end of each of a. series of rollers a holder-comprising two concentric rings one of which is fixed and the other floating the rollers being located in a space between such rings so that while accurately guided one end projects, a disk on which the floating ring is carried, balls located between the floating ring and disk, and movable grinding means adapted to act on the ends of the rollers.

8. In a machine for facing at right angles to their length an end of a series of rollers, a holder for the rollers comprising two concentric rings, one of which is fixed and the other floating, and from the side of which the ends of the rollers project one of said rings having a gap therein, a hopper with which such gap connects and into which the rollers are discharged and from which they can re-enter the holder, and a movable grinding member adapted to act on the ends of the rollers.

In testimony whereof I have hereunto set my hand in the presence of two subscribing 

